Picasa MPG no sound

I have a .MPG video file. When I run it in Windows Media Player, it has sound. When I run it in Picasa, I lose the sound. I'm pretty sure the solution would have something to do with codecs. If downloading codecs is the solution, I need to know exactly what to download (the last time I tried on my own, a lot of garbage came along with the codecs).

To give you a little more and explain why it doesnt have sound,
Gspot reports it is a DVD vob renamed extension to mpg and is using tjhe ac3 as suggested above in the forums.http://www.videohelp.com/tools/GSpot
Keep Gspot for the future and test your video on it
Once you drop a problem video on go down to proposed codecs and solutions, click on VID 1 then Vid 2 and Vid 3 then you can actually play it in GspotSo I tested it in my Picasa 3 on my new windows 7 x64 and also did not have sound so took it over here to my other windows 7 x32 which has the k-lite codec pack installed which includes the ac3 and the sound worksSo you can choose between the two suggestions
Download K-Lite Codec Pack on this page, http://codecguide.com/download_kl.htm
it has a selection of the packs I'd suggest the mega for your Vista SP2
Contents of the megahttp://codecguide.com/features_mega.htm
Choose either of the start download or download eitherway they lead to you choose your windowsCheers

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